I. Complete the sentences so that the meaning remains the same
1. If her condition should improve, we'll inform you immediately
Should....................
2. Jade will ask lots of difficult questions if she gets to interview a famous politician
Should..................
3. If you were able to go abroad for the summer, where would you go?
Were.........................
4. If I was to become a vet, I'd find putting animals down very difficult
Were..............
5. The world would be much better off if all environmental pollution stopped today
Were...............
6. If the hole in the ozone layer had been discovered sooner, fewer people would have got skin cancer
Had................
7. I wouldn't have become a teacher if I hadn't had such a good English teacher at scholl
Had.....................
Cho Δ\(ABC\) vuông tại \(A\) , đường cao \(AH\) . Gọi \(E\) ,\(F\) lần lượt là các hình chiếu của \(H\) trên \(AB\) và \(AC\) . CMR:
\(a\)) \(AE.AB=AF.AC\)
\(b\)) \(\dfrac{BF}{CF}=\left(\dfrac{AB}{AC}\right)^3\)
\(c\)) \(BC.BE.CF=AH^3\)